When a 45 kW load on a 200-240 V supply must talk USS, Modbus RTU or BACnet rather than industrial Ethernet, this SINAMICS G120X delivers 208 A at 110% overload for 60 s with no step-up transformer and IP20 cabinet mounting.

The B-suffix interface covers serial and building-management buses, so the drive drops into a controller that is not on PROFINET or PROFIBUS. At 45 kW it runs in a 305 x 709 x 360 mm FSF frame. Like the 41494 PROFINET sibling, this variant ships without DC terminals — right for short motor cables with no external du/dt filter planned.

The 41494 sibling is the PROFINET and EtherNet/IP option; the 41492 and 41491 siblings add DC terminals for an external brake resistor or du/dt filter.